1601132086
Replace * or any permission set containing create with create_socket_perms or create_stream_socket_perms. Add net_domain() to all domains using network sockets and delete rules already covered by domain.te or net.te. For netlink_route_socket, only nlmsg_write needs to be separately granted to specific domains that are permitted to modify the routing table. Clarification: read/write permissions are just ability to perform read/recv() or write/send() on the socket, whereas nlmsg_read/ nlmsg_write permissions control ability to observe or modify the underlying kernel state accessed via the socket. See security/selinux/nlmsgtab.c in the kernel for the mapping of netlink message types to nlmsg_read or nlmsg_write. Delete legacy rule for b/12061011. This change does not touch any rules where only read/write were allowed to a socket created by another domain (inherited across exec or received across socket or binder IPC). We may wish to rewrite some or all of those rules with the rw_socket_perms macro but that is a separate change. Change-Id: Ib0637ab86f6d388043eff928e5d96beb02e5450e Signed-off-by: Stephen Smalley <sds@tycho.nsa.gov>
90 lines
2.8 KiB
Plaintext
90 lines
2.8 KiB
Plaintext
# dumpstate
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type dumpstate, domain;
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permissive_or_unconfined(dumpstate)
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type dumpstate_exec, exec_type, file_type;
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init_daemon_domain(dumpstate)
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net_domain(dumpstate)
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relabelto_domain(dumpstate)
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binder_use(dumpstate)
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# Drop privileges by switching UID / GID
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allow dumpstate self:capability { setuid setgid };
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# Allow dumpstate to scan through /proc/pid for all processes
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r_dir_file(dumpstate, domain)
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# Send signals to processes
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allow dumpstate self:capability kill;
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# Allow executing files on system, such as:
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# /system/bin/toolbox
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# /system/bin/logcat
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# /system/bin/dumpsys
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allow dumpstate system_file:file execute_no_trans;
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# Create and write into /data/anr/
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allow dumpstate self:capability { dac_override chown fowner fsetid };
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allow dumpstate anr_data_file:dir { rw_dir_perms relabelto };
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allow dumpstate anr_data_file:file create_file_perms;
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allow dumpstate system_data_file:dir { create_dir_perms relabelfrom };
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# Allow reading /data/system/uiderrors.txt
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# TODO: scope this down.
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allow dumpstate system_data_file:file r_file_perms;
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# Read dmesg
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allow dumpstate self:capability2 syslog;
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allow dumpstate kernel:system syslog_read;
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# Get process attributes
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allow dumpstate domain:process getattr;
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# Signal java processes to dump their stack
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allow dumpstate { appdomain system_server }:process signal;
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# Signal native processes to dump their stack.
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# This list comes from native_processes_to_dump in dumpstate/utils.c
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allow dumpstate { drmserver mediaserver sdcardd surfaceflinger }:process signal;
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# The vdc command needs to talk to the vold socket.
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unix_socket_connect(dumpstate, vold, vold)
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# Vibrate the device after we're done collecting the bugreport
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# /sys/class/timed_output/vibrator/enable
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# TODO: create a new file class, instead of allowing write access to all of /sys
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allow dumpstate sysfs:file w_file_perms;
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# Other random bits of data we want to collect
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allow dumpstate qtaguid_proc:file r_file_perms;
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allow dumpstate debugfs:file r_file_perms;
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# Allow dumpstate to make binder calls to any binder service
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binder_call(dumpstate, binderservicedomain)
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binder_call(dumpstate, appdomain)
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# Reading /proc/PID/maps of other processes
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allow dumpstate self:capability sys_ptrace;
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# Allow the bugreport service to create a file in
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# /data/data/com.android.shell/files/bugreports/bugreport
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allow dumpstate shell_data_file:dir create_dir_perms;
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allow dumpstate shell_data_file:file create_file_perms;
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# Run a shell.
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allow dumpstate shell_exec:file rx_file_perms;
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# For running am and similar framework commands.
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# Run /system/bin/app_process.
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allow dumpstate zygote_exec:file rx_file_perms;
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# Dalvik Compiler JIT.
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allow dumpstate ashmem_device:chr_file execute;
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allow dumpstate dumpstate_tmpfs:file execute;
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allow dumpstate self:process execmem;
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# For art.
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allow dumpstate dalvikcache_data_file:file execute;
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# logd access
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read_logd(dumpstate)
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control_logd(dumpstate)
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